Troubleshooting
Problem
Reports and models include expressions that Cognos Analytics is able include in SQL statements sent to various database vendors. When those applications are migrated to Google BigQuery, some decomposition and local processing can occur.
Symptom
Cognos Analytics is aware of the SQL capabilities of database products. When a vendor does not support specific constructs or has limitations in their implementation, Cognos Analytics compensate using local processing. This may result in queries retrieving more data and taking more time than is observed with other vendors.
Document Location
Worldwide
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Document Information
Modified date:
14 January 2026
UID
ibm16448394